Method of neutralizing corrosive fumes in gases.



T. E. MURRAY 6: E. B. RIGKETI'S.

METHOD OF NEUTRALIZING GORROSIVB FUMES IN GASES.

APPLIOATION FILED 00114, 1914.

1, 1 32,679,, Patentd Mar. 23, 1915.

2 SHEETS-SHEET 1.

ugqmimw yaob gnwwilozi uZZdz/ 4 f 7 "'7 %11 g float-am T. B. MURRAY & E. B. RIGKETTS.

METHOD OF NEUTRALIZING GORROSIVE FUMES IN GASES.

APPLIGATION FILED 00T.14, 1914.

1,132,679., Patented Man 23,1915.

2 S HEETSSHEET 2.

enemas E. MURRAY AND EDWIN .n. 'nroxn'r'rs, or new ronn, n. Y.

METHOD OF NEUTRALIZING CQBBOSIVE FUMES IN GASES.

Specification of Letters Patent. Patgntgfl E5 23 3915;

Application filed October 14, 181%. Serial No. 868,666.

To all whom it may concern:

Be it known that WG,THOMAS E. MURRAY and EDWIN B. RICKETTS, citizens of the United States, residing at New York, in

the county of New York and State ofNew;

York, have invented a certain new and useful Improvement in Methods of N eutralizing Corrosive Fumes in Gases, of which the following is a specification.

Our invention is a process ofneutralizing corrosive gas contained in a'current of inert gas, and includes an apparatus whereby said process maybe carried into practical efi'ect.

Our invention is more-especially intendedv to neutralize the fumes of'sulfuric acid which arise from storage batteries while being charged, which fumes are destructive to clothing and many other objects, and also injuriousfto health.

Our process consists broadly 1n causing the curr nt containing the corrosive gas topass in t e form of fine jets through a sheet, orsheets, of liquid solution containing an ingredient capable of chemically combining with said gases to produce an inert or noncorrosive substance which is taken upby said solution; so that the current is delivered substantially free from said gas.

In the accompanying drawingsFigur e 1 is a vertical longitudinal section of our apparatus. Fig. 2 is atransverse sectitmon the line 3 of Fig. 1. .Fig. 3 is an enlarged vertical section of a portion of one of the perforated plates.

Similar letters of reference indicate like parts.

A is a duct leading from the battery room or other place in which corrosive fumes, such as those of sulfuric acid, are generated. Said fumes mingled with the air of the room are drawn from said room and delivered to the chimney or other outlet by means of an exhaust fan B, here shown as driven by an electric motor C. In the duct A isdisposed a box D, divided horizontally into two compartments E, F by a partition G, formed in a series of parallel troughs H. In the bottom of each trough is a slot to receive the upper shouldered portion 1 of a vertical plate J. The said shouldered portion T is supported in any suitable way, as by blocks L, Fig. 3, above the trough bottom, and there is clearance between the sides of said portion and said troughwalls, as shown at M, so that liquid in the trough may run down both surfaces of saidplate in substantially thin sheets N. The plates J have many fine perforations. Attheir vertical edges, they are in contact with the side walls of compartment r O is a rotary pump, the shaft of which is driven by belt Pfronimotor C. Theinlet pipe Qgof said pump is connected to the bottom of compartment F, 'and'the outlet pipe R to the top of compartment E.

- In'compartment F we place a solution of soda ash, preferably in the proportion of .one pound of soda ash to each gallon of water. This solution, by means of pump 0,

is drawn from compartment F and delivered into compartment E, whence it flows down liquid sheets N The current of air containing the acid fumes to be eliminated is drawn bythe exthesurfaces of the .verticalperforated )lates f 'haust fan B through said liquid sheets,,and.

through the perforations in plates J, as indicated by the arrows.1.. The soda solution because drawn through the perforations becomes broken up into a fine spray and is thoroughly mixed with the air and acid fumes,"neutralizing the sulfuric. acid and producing-sodium sulfate which enters into the solution. The chemical reaction here taking place is as follows:

sulfate, it is drawn off and fresh solution substituted.

Any number of plates J may be used.

While we have here shown them as of con-- siderable thickness, we may make'them. if desired, of any suitable foraminous material, such as wire-netting or gauze, or perforated thin metal. V a i "We claim:

1. The process of neutralizing corrosive gas contained in a current of inert gas,

which consists in causing said current to pass first through a thin sheet of solution containing an ingredient capable of chemically combining with said corrosive gas toneutralize the same, and then with the liquid entrained by said passage to pass in the form of fine jets through the interstices of a forarni nous screen.

2. The process of neutralizing sulfuric I acid fairies coritaixiedi in an air-current,

which consists infirst causing saifi current to ass through a thin sheet of soda ash-solutiori, and then with the liquid entrained V by said passage to pass in the formof time jets through the intersticesof a, foraminous screen. i

3. The process of neutralizing mllfuric acid fumes contained 'in' an air-current;

which consists in first causing saw current to pass through a thin sheet of soda ash solution,v amt them withthe. liquid: entrained by said passage to pass in form of fine jets through, the. interstices of a toramimous pfi'ate i over which pL-ate saioi sheet. is kept timings 4L The process of neutraiiz-irig sulfiaric acid fumes containett in an air currents,

which consists" in first causing saioi current to pass throu h a. thin sheet of soda ash so lotion and: t em with the liquid! entrained by saint passage to pass in the form of jets through the interstices of a foraminous plate, ma then to traverse a second thin heet of soda ash solution, the said liquid sheets being kept flowing on opposite sides of saici fplate.

5. The process of neutralizing corrosive gas. containe$ in a current of inert gas, which consists in causing saidi current to traverse asolutiom containing an ingredient capable'oi chemically combining with; said corrosive gas to produce in said: solution a non-corrosive substance.

In testimony whereof Wehavc tfliltetii cignatiires in presence of two witmessesi THOMAS EDWIN B,- RKCKETES'.

Witnesses: k

Gaiz'mum- '1. PW, MAY Gr, McGARar. 

